[ 17a 3 194 



This die ought to be made cold, because, when the logwood is warm- 

 rhe color it gives is spotted and not equal; besides it is much more dull 

 ;ind less handsome. 



The decoction cannot be preserved more than three weeks or a 

 month, 



Violet with Brazil wood and Logwood. 



To make this violet, the alumed silks, after being rinsed, as common, 

 are put into a bath of Brazil wood of the usual degree of heat, and af- 

 ter they have undergone this bath, add a decoction of logwood, and 

 work them therein, and when the color is as full as desired, add to the 

 bath a little potash ley: then wash the silks, wring and dry in the usual 

 manner. 



If we begin by the logwood, we should use the bath cold, on ac- 

 count of the uneven die it gives when it is hot, and which it is even 

 subject to produce when taken from the bath and exposed to heat. This 

 does not take place in the method we have given for it: for it is not 

 necessary to give the logwood a cooling by this process, because the 

 silks are impregnated wdth the die of the Brazil wood. 



Instead of putting the potash into the bath, it is sometimes proper io 

 make a bath of alum, with clear water, for the alteration of the tint. 

 This ought to be adopted when wc apprehend the silks may be too 

 much charged with the die, by leaving them long in the bath. 



Violet iDith the Brazil wood and Archil. 



After having boiled and impregnated the silk virith the alum waten 

 it is to be put into a bath, more or less clear, of Brazil w^ood, according 

 to the shade intended to be given; and, when it is taken out, the silk is 

 to be beetled in a river, then to be put into a bath of archil, in order to 

 complete the color. It is to be washed a second time, and to receive a 

 beetling. After this it is to be put' into the blue vat, then wrung and 

 dried with the same despatch and precision as the greens and blues. 



Of Yellow on Silk in hanks. 



Silk destined to be died yellow, is boiled in the proportion of twenty 

 pounds of soap to each hundred pounds of silk. 



After the boiling, it is to be washed and put into the alum, and after 

 being washed again, as usual, (called refreshing,) and dressed; then to 

 be put upon rods in hanks, of about seven or eight ounces each, and 

 worked in the yellow^ bath. 



For dying clear yellow, fjaune/ranc,J called by diers yellow in 

 grain, they commonly employ no other ingredient than weld. 



Put into the caldron about two pounds of weld to each pound of silk; 

 and, in order that the bunches of the plant may mix well with the water, 

 lay on them large blocks of wood. After a quarter of an hour of boiling, 

 "he bath is to be strained, and left to cool till the hand can be borne in 



